The plant is already producing battery packs for Tesla’s stationary energy storage business, Tesla Energy, and it is ramping up for car battery pack production.

The first battery cell production line is up but not in operation yet. During the media tour, the company completely blocked access to the cell manufacturing machines – saying that the technology is proprietary to Panasonic.

When first announcing the battery plant, Tesla was talking about a total output of 50 GWh, but this week, Tesla confirmed that the new plant will aim to produce around 150 GWh of battery pack in order to support the company’s plans to produce around 1 million cars in 2020 (when the factory should hit its full production rate).